135445530 has 64 divisors (see below), whose sum is σ = 364238208. Its totient is φ = 31944960.

The previous prime is 135445501. The next prime is 135445537. The reversal of 135445530 is 35544531.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (135445537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6664 + ... + 17756.

It is an arithmetic number, because the mean of its divisors is an integer number (5691222).

Almost surely, 2^135445530 is an apocalyptic number.

135445530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 135445530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182119104).

135445530 is an abundant number, since it is smaller than the sum of its proper divisors (228792678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135445530 is a wasteful number, since it uses less digits than its factorization.

135445530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11151.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 135445530 is about 11638.1068048029. The cubic root of 135445530 is about 513.5564943957.

Subtracting from 135445530 its reverse (35544531), we obtain a palindrome (99900999).

The spelling of 135445530 in words is "one hundred thirty-five million, four hundred forty-five thousand, five hundred thirty".